<!DOCTYPE html>
<html>

<head>
	<meta charset="UTF-8">
	<title>sgjq</title>
	<script src="ruler.js"></script>
	<script src="taijiball.js"></script>
	<script src="taiji.js"></script>
	<script src="sgjqmap.js"></script>
</head>

<body style="border:1px solid black;">
	<canvas id="background-map" style="display:block;"></canvas>

	<script>
		var canvas = document.getElementById("background-map");
		canvas.width = "1000";
		canvas.height = "900";
		var ctx = canvas.getContext("2d");

		//drawRuler("background-map");
		drawMap();

	</script>
</body>

</html>